Twelve years ago he was left to bleed to death on a hospital trolley on the Greek island of Rhodes.

A doctor was later found guilty of his manslaughter by neglect.

Today, on the anniversary of his death, the family of Christopher Rochester gathered at his graveside to talk about their continued torment by the Greek authorities, who they claim continue to leave them in the dark about what happened to their son after he died.

As the family of Christopher Rochester mark the anniversary of his death, there are still many unanswered questions about what happened to his kidney. His body was returned with a kidney missing, and tests on one sent to them proved it didn't belong to him.

Last year his family was forced to watch as Greek authorities exhumed his body to carry out their own DNA tests. But they are still waiting for the results of those tests.